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这是我做的51单片机 LED灯流水效果+定时器
- #include<reg51.h>
- //宏定义
- #define uchar unsigned char
- #define LED P2
- //全局变量
- uchar Time;
- void main(void)
- {
- uchar data1=0xfe;
- TMOD = 0x01; //选择工作方式1
- TH0 = 0x3C; //设置初始值,定时50MS
- TL0 = 0xB0;
- EA = 1; //打开总中断
- ET0 = 1; //打开定时器0中断
- TR0 = 1; //启动定时器0
- while(1)
- {
- LED = data1;
- if(Time==10) //0.5s进入if内进行移位
- {
- Time = 0;
- data1 = data1<<1|0x01;
- if(data1==0xff)data1=0xfe;
- }
-
-
- }
- }
- void Timer0() interrupt 1
- {
- TH0 = 0x3C; //设置初始值
- TL0 = 0xB0;
- Time++;
- }
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